Born and raised in Mount Taiheng, the half-yao Kong Hongjun embarks on a journey to the human realm. Tasked with unraveling his father's murder, eradicating the Black Jiao threat in Chang'an, and returning the Heart Lamp to the Chen family, his plans take an unexpected turn when the military general Li Jinglong unintentionally absorbs the Heart Lamp. A cryptic summons leads Kong Hongjun to the Court of Exorcism in Chang'an, where he is reluctantly paired with the disgraced Li Jinglong as his superior. Together with an eclectic team including a foreign noble, a yao companion, and a timid scholar, Kong Hongjun and Li Jinglong must confront the lurking yao forces infesting the city. Amidst their mission, Kong Hongjun must conceal his true nature from the yao-despising Li Jinglong, all while striving to retrieve the Heart Lamp from within him.